Energy-saving iron and foreign matter removing system for belt conveyor and using method of energy-saving iron and foreign matter removing system

Abstract

The invention relates to an energy-saving iron and foreign matter removing system for a belt conveyor and a using method of the energy-saving iron and foreign matter removing system. An existing electromagnetic iron remover works for a long time and consumes much power. Therefore, the energy-saving iron and foreign matter removing system for the belt conveyor comprises an electromagnetic iron remover which is arranged above the matched belt conveyor and is powered by an underground matched power supply, and further comprises an inductance coil easy to disassemble and assemble, a normally-open power switch and a lower computer, the normally-open power switch is arranged on a wire between the underground matched power supply and the electromagnetic iron remover, and the lower computer is connected with the normally-open power switch. The inductance coil easy to disassemble and assemble comprises M pairs of N wire quick connectors and a coil wound on an upper-layer rubber belt of the matched rubber belt conveyor, the upper-layer rubber belt of the matched rubber belt conveyor, coal flow and foreign matter possibly appearing on the coal flow can penetrate through the coil, and the two ends of the inductance coil easy to disassemble and assemble are connected with the signal input end of the lower computer respectively. The device is scientific in design, reliable in operation, power-saving, energy-saving and suitable for being used in cooperation with the coal mine belt conveyor.

Description

Technical Field

[0001] The invention relates to an energy-saving iron and foreign matter removal system for a belt conveyor and a use method thereof. Background Art

[0002] A Chinese utility model patent, CN204469885U, granted on July 15, 2015, discloses a mobile dump return electromagnet device for use in mineral mining and other fields. This device belongs to the field of mechanical equipment. It includes a metal detector and a return electromagnet. The return electromagnet device consists of a bracket, a track, and an electromagnet. A movable plate is suspended from the bracket, with an electromagnet fixed to its top. The electromagnet contacts the track via wheels or slots. The track is fixed to both ends of the bracket's upper portion, with the side of the track contacting the electromagnet perpendicular to the horizontal plane. The metal detector and return electromagnet are each connected to a numerical control box.

[0003] The Chinese utility model patent with the announcement number CN214320509U, which was authorized and announced on October 1, 2021, discloses a self-unloading electromagnetic iron remover including an iron remover body, an electromagnet is provided in the middle of the body, an iron unloading conveyor belt is provided on the outside of the electromagnet, the iron unloading conveyor belt is driven to rotate by a provided driving device, a stirring shaft is provided on the lower side of the iron unloading conveyor belt, and the two ends of the stirring shaft are rotatably inserted into a frame provided in the body, one end of the stirring shaft is provided with a turbine, the upper part of the turbine is engaged with a worm, and the two ends of the worm are coaxially provided with rollers, and the rollers are in rolling cooperation with the iron unloading conveyor belt. The stirring shaft is provided on the lower side of the iron unloading conveyor belt of the electromagnetic iron remover, and the stirring shaft is driven by a turbine and worm to continuously flip the iron-containing material under the electromagnet. This structure advantageously ensures that the iron-containing material can be fully exposed to the magnetic field of the electromagnet and sucked out when passing through the electromagnet.

[0004] The Chinese invention patent application published on July 23, 2021, with publication number CN113148537A, discloses a magnetic repulsion type magnetic levitation belt conveyor based on machine vision, including a roller, a magnetic conveyor belt, a suspension support, and a magnetic suspension belt. The invention relates to a device comprising a suspension support module, a machine vision module, and a frame. The roller is an anti-magnetic roller. The conveyor belt is a magnetic conveyor belt, which is rotatably connected to two anti-magnetic rollers. The suspension support module comprises an upper permanent magnet, an electromagnet, a lower permanent magnet, a support plate, and a support frame. The upper permanent magnet and the electromagnet repel the magnetic conveyor belt to cause the conveyor belt to suspend, while the lower permanent magnet attracts the magnetic conveyor belt to cause the conveyor belt to suspend. The machine vision module comprises a camera and a computer. The camera is used to simultaneously obtain images of the suspension gap between the conveyor belt and multiple groups of suspension support modules. The computer analyzes the size of the suspension gap based on the image and controls the current of the electromagnet to keep the conveyor belt stably suspended. The device has a simple structure, fast response, and reduces energy consumption.

[0005] The solutions described in the three patents above all utilize high-power electromagnets to remove ferrous foreign matter from the coal flow. Under normal circumstances, ferrous foreign matter should be absent from the coal flow of a belt conveyor. Occasional foreign matter that does appear is primarily curled-up clumps of mining anchor nets and bolts. High-power electromagnets are constantly energized, consuming significant energy, and are unable to remove wood or other non-ferrous foreign matter (which rarely occurs).

[0006] A Chinese invention patent application, published on March 18, 2025, with publication number CN119644444A, discloses a method for detecting foreign objects on a belt conveyor. This method belongs to the field of metal detection technology for coal transportation. The method comprises a fluxgate sensor and a signal acquisition unit. The fluxgate sensor and signal acquisition unit are integrated into an integrated unit, with multiple integrated units forming a Doppler array structure. The signal acquisition unit includes an excitation signal generator, a signal processor, an A / D acquisition unit, and a data processing algorithm. The metal detection device of this solution utilizes a non-magnetic bracket to secure the magnetic sensor above the conveyor belt. Using the magnetic field data without abnormal metal as the background, the magnetic sensor detects magnetic anomaly signals generated by metal on the conveyor belt below, which are then connected to a local voice alarm or controlled to shut down the belt conveyor. This method detects ferrous metal in the coal flow and determines its relative size and relative position after shutdown, resulting in more accurate identification.

[0007] The external magnetic field excitation coils in this invention's technical solution are located above the coal on the conveyor belt. To avoid affecting the coal flow, they must be kept at a certain distance from the coal flow. This requires the use of multiple integrated units to construct a Doppler array structure. The magnetic field density rapidly decreases as the distance between the external magnetic field excitation coils and the coal flow increases, consuming significant energy to maintain operation. Summary of the Invention

[0008] The technical problem to be solved by the present invention is how to overcome the above-mentioned defects of the prior art and provide an energy-saving iron and foreign matter removal system for a belt conveyor with a simple structure, easy installation and energy-saving operation, and a method for using the system.

[0009] In order to solve the above technical problems, the energy-saving iron removal and foreign matter removal system for the belt conveyor includes an electromagnetic iron remover, which is arranged above the matching belt conveyor and powered by the underground matching power supply. It is characterized in that: it also includes an easily detachable inductor coil, a normally open power switch and a lower computer. The normally open power switch is arranged on the wire between the underground matching power supply and the electromagnetic iron remover. The upper belt of the matching belt conveyor, the coal flow and foreign matter that may appear on the coal flow are sufficient to pass through the easily detachable inductor coil, and the easily detachable inductor coil contains M×N turns. The wires are divided into M groups, each group containing N turns of wire, and are cut. The wire ends on one side of the cut are connected one-to-one to N pins of an N-wire plug, and the wire ends on the other side of the cut are connected one-to-one to metal connectors in N sockets of an N-wire socket. The N-wire plug and N-wire socket in the same group are plugged into each other to form M N-wire quick-connect joints. The cut wires are detachably connected through the M N-wire quick-connect joints. The two ends of the detachable inductor coil are respectively connected to the input end of the lower computer signal.

[0010] When the lower computer senses an increase in the magnetic flux in the easily detachable inductor coil, it determines that there is iron foreign matter in the coal flow. The lower computer turns on the power supply of the electromagnetic iron remover through the normally open power switch and resets after a predetermined time T. The predetermined time T is sufficient for the iron foreign matter to be absorbed by the electromagnetic iron remover, where M and N are positive integers.

[0011] The lower computer can be composed of PLC or single chip microcomputer to directly control the equipment and obtain the equipment status.

[0012] When the lower computer senses an increase in magnetic flux within the easily removable inductor, it determines that ferrous foreign matter is present in the coal flow. It then switches on the electromagnetic remover via a normally open power switch and resets after a predetermined time, T, sufficient for the electromagnetic remover to remove the ferrous foreign matter. This design allows the easily removable inductor to have a simple structure, provide sensitive detection, and facilitate assembly and disassembly. When ferrous foreign matter rapidly passes through the easily removable inductor along with the coal flow, it generates a strong change in magnetic flux, resulting in sensitive detection. The electromagnetic remover does not need to operate for extended periods of time; it is activated only when ferrous foreign matter is detected upstream, thus saving electricity and energy.

[0013] As an optimization, it also includes a host computer, which is connected to the slave computer through a signal line, radio or optical fiber to form a remote control network. The host computer is equipped with a display screen and a command input device. A first camera is provided above the matching belt conveyor upstream of the coal flow below the electromagnetic iron remover. The lens of the first camera points to the coal flow below and is connected to the signal input end of the slave computer. The coal flow image taken by the first camera is displayed in real time on the display screen. When the staff sees foreign matter in the coal flow image taken by the first camera, they input a closing command to the host computer through the command input device. The host computer transmits the closing command to the slave computer, and the slave computer turns on the power supply of the electromagnetic iron remover through the normally open power switch.

[0014] The upper computer can directly issue control commands, the upper computer sends commands to the lower computer, and the lower computer directly controls the corresponding equipment to perform corresponding actions.

[0015] The display screen and command input device can be a touch screen, a combination of a display screen and a keyboard, a combination of a display screen and a knob or button, or a combination of a display screen, a keyboard, and a mouse. Such a design facilitates remote control by staff.

[0016] As an optimization, the electromagnetic iron remover is a self-unloading electromagnetic iron remover, which also includes a second camera. The second camera is directly below the electromagnetic iron remover and is connected to the signal input terminal of the lower computer. The image captured by the second camera is displayed in real time on the display screen. With this design, the staff can use the second camera to check in real time whether the iron foreign matter adsorbed by the electromagnetic iron remover has been automatically unloaded to the accompanying belt conveyor. If not, the power supply to the electromagnetic iron remover will not be stopped. If so, the power supply to the electromagnetic iron remover will be stopped.

[0017] As an optimization, it also includes an alarm, which is connected to the signal output terminal of the lower computer or the upper computer. Such a design is convenient for reminding the staff to start the iron removal of the electromagnetic iron remover.

[0018] As an optimization, a third camera is installed downstream of the electromagnetic separator, facing the coal stream below it. This camera's lens is connected to the signal input port of the lower computer. The image captured by the third camera is displayed in real time on the monitor. This design makes it easier for workers to observe whether there are still foreign objects in the coal stream after it passes through the electromagnetic separator.

[0019] As an optimization, a non-ferrous foreign matter removal device is also provided downstream of the third camera. The non-ferrous foreign matter removal device includes a pneumatic lifting platform and a pneumatic lifting inclined gate. The pneumatic lifting platform is arranged between the upper belt and the lower belt of the belt conveyor. The pneumatic lifting platform includes a lower vertical telescopic cylinder and a platform. The pneumatic lifting inclined gate is arranged above the coal flow of the upper belt of the belt conveyor. The pneumatic lifting inclined gate includes an upper vertical telescopic cylinder and an inclined gate. The upper and lower vertical telescopic cylinders both include a cylinder body and a piston rod. The outer end of the piston rod of the upper vertical telescopic cylinder is downward, and the inclined gate is fixed on the outer end of its piston rod. The outer end of the piston rod of the lower vertical telescopic cylinder is upward, and the platform is fixed on the outer end of its piston rod. The platform and the inclined gate are opposite to each other through the upper belt. The upper and lower vertical telescopic cylinders are respectively connected to the high-pressure air supply pipe through the electric control valve group, and the electric control valve groups of the two are respectively connected to the signal output end of the lower computer. The side of the inclined gate adjacent to the center of the tunnel is downstream of the coal flow, and the side adjacent to the side of the tunnel is upstream of the coal flow.

[0020] The inclined gate intersects obliquely with the longitudinal vertical bisector of the upper belt of the accompanying belt conveyor. With this design, if foreign matter is found in the coal flow after passing through the electromagnetic iron remover, the pneumatic lifting platform and the pneumatic lifting inclined gate are automatically or manually activated. The pneumatic lifting platform will level the upper belt, allowing the accompanying belt conveyor to continue operating. As the coal flow containing foreign matter moves forward with the upper belt, it will encounter the inclined baffle, which will guide this part of the coal and foreign matter away from the accompanying belt conveyor. The pneumatic lifting platform and the pneumatic lifting inclined gate are then restored, and the coal flow returns to normal.

[0021] As an optimization, a coal collection box is installed in the laneway on one side of the non-ferrous foreign matter removal device. Universal casters are located beneath the coal collection box. Guide rods are fixed vertically on either side of the inclined gate. Inside these rods are chutes. The inclined gate extends into the adjacent chutes and can be raised and lowered along these chutes by the upper vertical telescopic cylinder. This design allows the coal flow containing foreign matter to be directed into the coal collection box when the inclined gate descends for subsequent centralized cleaning.

[0022] The method for using the energy-saving iron removal and foreign matter removal system for a belt conveyor of the present invention comprises the following steps: ①. Install the aforementioned energy-saving iron and foreign matter removal system for the belt conveyor on the accompanying belt conveyor and put it into use simultaneously with the accompanying belt conveyor; ②. When the lower computer senses an increase in the magnetic flux in the easily removable inductor coil, it determines that there is iron in the coal flow. The lower computer turns on the power supply of the electromagnetic iron remover through the normally open power switch and resets after a predetermined time T. The predetermined time T is sufficient for the electromagnetic iron remover to remove the iron. When the staff sees foreign matter in the coal flow image captured by the first camera through the display screen, they input a closing command to the upper computer through the command input device. The upper computer transmits the closing command to the lower computer, and the lower computer turns on the power supply of the electromagnetic iron remover through the normally open power switch. When the staff sees the image captured by the second camera on the display screen showing that the iron foreign matter on the electromagnetic iron remover is first sucked away and then removed, they input a power-off command to the upper computer through the command input device. The upper computer transmits the power-off command to the lower computer, and the lower computer cuts off the power supply to the electromagnetic iron remover through the normally open power switch; ③. When the staff sees the coal flow image captured by the third camera on the display screen and finds that there are still foreign objects in the coal flow, they judge that the foreign objects are non-ferrous foreign objects. They input the non-ferrous foreign object removal instruction to the upper computer through the instruction input device. The upper computer transmits the non-ferrous foreign object removal instruction to the lower computer. Under the control of the lower computer, the piston rod of the lower vertical telescopic cylinder is extended, so that the platform can flatten the upper belt above it. The piston rod of the upper vertical telescopic cylinder is extended, driving the inclined gate plate to move downward, cutting off the coal flow. The upper belt of the accompanying belt conveyor passes between the lower edge of the inclined gate plate and the platform. Under the guidance of the inclined gate plate, the coal flow and the foreign objects therein are separated from the upper belt of the accompanying belt conveyor and fall into the coal collecting box. Then, under the control of the staff or the automatic control of the lower computer, the pneumatic lifting platform and the pneumatic lifting inclined gate plate are reset, and the coal flow returns to normal.

[0023] With such a design, on the one hand, the combination of the easily detachable inductive coil and the lower computer can be used to automatically open and close the electromagnetic iron remover to remove iron foreign matter. On the other hand, with the help of the upper computer, the first, second, and third cameras and other equipment, the energy-saving iron removal and foreign matter removal system for the belt conveyor of the present invention can be manually remotely controlled to remove iron and foreign matter. The electromagnetic iron remover and non-ferrous foreign matter removal device in this system are both intermittent working equipment, and only work occasionally, saving electricity and energy.

[0024] As an optimization, the host or slave computer is also equipped with a machine learning module. This module and the host or slave computer form an intelligent visual detection and processing system. Based on the images captured by the first, second, and third cameras, this module replaces the human operator in outputting commands and controlling the slave or host computer. This design allows for simultaneous manual operation while the machine learning module and the host or slave computer form an intelligent visual detection and processing system. This continuously accumulates foreign object characteristics in the coal flow chart, strengthens the machine learning model, and achieves automatic foreign object detection and processing.

[0025] The energy-saving iron and foreign matter removal system for a belt conveyor of the present invention and the use method thereof have scientific design, reliable operation, power saving and energy saving, and are suitable for use with a coal mine belt conveyor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The energy-saving iron removal and foreign body removal system for a belt conveyor and its use method are further described below with reference to the accompanying drawings: Figure 1 This is a structural diagram of the first embodiment of the energy-saving iron and foreign matter removal system for belt conveyors; Figure 2 This is a schematic diagram of the normal state of the second embodiment of the energy-saving iron and foreign matter removal system for the belt conveyor; Figure 3 This is a schematic diagram of the cross-sectional coal flow of the non-ferrous foreign matter removal device in the second embodiment of the energy-saving iron and foreign matter removal system for belt conveyors; Figure 4 yes Figure 3 The diagram shown is a schematic diagram of the AA cross-sectional structure of the energy-saving iron and foreign matter removal system for the belt conveyor (the direction indicated by the solid arrow in the figure is the direction of coal flow).

[0027] In the figure: 1 is an electromagnetic iron remover, 2 is an underground power supply, 3 is an easily detachable inductor coil, 4 is a normally open power switch, 5 is a lower computer, 6 is an upper tape, 7 is a coal flow, 8 is an N-line plug, 9 is an N-line socket, 10 is a host computer, 11 is a display screen, 12 is a command input device, 13 is a first camera, 14 is a second camera, 15 is an alarm, 16 is a third camera, 17 is a pneumatic lifting platform, 171 is a lower vertical telescopic cylinder, 172 is a platform, 18 is a pneumatic lifting inclined gate, 181 is an upper vertical telescopic cylinder, 182 is an inclined gate, 183 is a guide groove rod, 19 is a lower belt, 20 is a coal collecting box, 21 is a belt lane bottom plate, 22 is a platform guide plate, 23 is a platform support plate, and 24 is a roller. DETAILED DESCRIPTION

[0028] Implementation method 1: Figure 1As shown, the energy-saving iron and foreign matter removal system for the belt conveyor includes an electromagnetic iron remover 1, which is arranged above the matching belt conveyor and powered by the underground matching power supply 2. It is characterized in that it also includes an easily detachable inductor 3, a normally open power switch 4 and a lower computer 5. The normally open power switch 4 is arranged on the wire between the underground matching power supply 2 and the electromagnetic iron remover 1. The upper belt 6 of the matching belt conveyor, the coal flow 7 and the foreign matter that may appear on the coal flow 7 are sufficient to pass through the easily detachable inductor 3. The easily detachable inductor 3 contains M ×N turns of wire, the above-mentioned wires are divided into M groups, each group containing N turns of wire, and are cut off. The wire ends on one side of the cut are respectively connected to the N pins of an N-line plug 8 in a one-to-one correspondence, and the wire ends on the other side of the cut are respectively connected to the metal connectors in the N sockets of an N-line socket 9 in a one-to-one correspondence. The N-line plugs and N-line sockets in the same group are plugged into each other to form M N-line quick-connect joints. The cut wires are detachably connected through the above-mentioned M N-line quick-connect joints. The two ends of the detachable inductor coil are respectively connected to the input end of the lower computer signal.

[0029] If the N-wire quick-connect connector uses an existing VGA port (widely used between graphics cards and monitors, with a 15-pin plug and a 15-pin receptacle), 20 VGA ports can be used with a 300-turn coil. In this case, N equals 15 and M equals 20.

[0030] When the lower computer 5 senses an increase in the magnetic flux in the easily detachable inductor 3, it determines that there is iron foreign matter in the coal flow 7. The lower computer 5 turns on the power supply of the electromagnetic iron remover 1 through the normally open power switch 4, and resets (i.e., cuts off the power) after a predetermined time T (such as 3 minutes). The predetermined time T is sufficient for the iron foreign matter to be absorbed and removed by the electromagnetic iron remover, where M and N are positive integers.

[0031] It also includes a host computer 10, which is connected to the slave computer 5 through a signal line, radio or optical fiber to form a remote control network. The host computer 10 is equipped with a display screen 11 and a command input device 12. A first camera 13 is provided above the matching belt conveyor upstream of the coal flow 7 below the electromagnetic iron remover 1. The lens of the first camera 13 points to the coal flow 7 below and is connected to the signal input end of the slave computer 5. The coal flow image taken by the first camera 13 is displayed in real time on the display screen 11. When the staff sees foreign matter in the coal flow image taken by the first camera 13, they input a closing command to the host computer 10 through the command input device 12. The host computer 10 transmits the closing command to the slave computer 5, and the slave computer 5 turns on the power supply of the electromagnetic iron remover 1 through the normally open power switch 4.

[0032] The display screen 11 and the instruction input device 12 can be a touch screen, or a combination of a display screen and a keyboard, or a combination of a display screen, a keyboard and a mouse, or a combination of a display screen and a knob or button.

[0033] Figure 1-3 The command input device 12 is in the form of a button.

[0034] The electromagnetic iron remover 1 is a self-unloading electromagnetic iron remover (see CN214320509U), which also includes a second camera 14, which is directly opposite to the bottom of the electromagnetic iron remover 1 and is connected to the signal input end of the lower computer 5. The image captured by the second camera 14 is displayed in real time on the display screen 11.

[0035] It also includes an alarm 15 , which is connected to the signal output end of the slave computer 5 or the host computer 10 .

[0036] Implementation method 2: Figure 2 、 3 As shown in Figure 4, a third camera 16 is provided downstream of the coal flow 7 below the electromagnetic iron remover 1. The lens of the third camera 16 is facing the coal flow 7 below it and is connected to the signal input end of the lower computer 5. The image captured by the third camera 16 is displayed in real time on the display screen 11.

[0037] A non-ferrous foreign matter removal device is also provided downstream of the third camera 16. The non-ferrous foreign matter removal device includes a pneumatic lifting platform 17 and a pneumatic lifting inclined gate 18. The pneumatic lifting platform 17 is arranged between the upper belt 6 and the lower belt 19 of the accompanying belt conveyor. The pneumatic lifting platform 17 includes a lower vertical telescopic cylinder 171 and a platform 172. The pneumatic lifting inclined gate 18 is arranged above the coal flow 7 of the upper belt 6 of the accompanying belt conveyor. The pneumatic lifting inclined gate 18 includes an upper vertical telescopic cylinder 181 and an inclined gate 182. The upper vertical telescopic cylinder 181 and the lower vertical telescopic cylinder 171 both include a cylinder body and a piston rod. The outer end of the piston rod of the upper vertical telescopic cylinder 181 is downward, and the inclined gate 182 is fixed to the outer end of its piston rod. The outer end of the piston rod of the lower vertical telescopic cylinder 171 points upward, and a platform 172 is fixed to the outer end of its piston rod. The platform 172 and the inclined gate 182 are vertically opposed to each other across the upper belt 6. The upper and lower vertical telescopic cylinders are respectively connected to the supporting high-pressure gas supply pipe (not shown) through an electrically controlled valve group (not shown in the figure), and their electrically controlled valve groups are respectively connected to the signal output end of the lower computer 5. The side of the inclined gate 182 adjacent to the center of the supporting roadway is downstream of the coal flow 7, and the side adjacent to the roadway side is upstream of the coal flow 7. The inclined gate 182 is inclined and intersects with the longitudinal vertical bisector of the upper belt 6 of the supporting belt conveyor.

[0038] Note: In this patent, the direction from which the coal flow 7 comes is referred to as upstream, and the direction from which the coal flow 7 goes is referred to as downstream.

[0039] A coal collecting box 20 is also provided in the tunnel on one side of the non-ferrous foreign matter removal device, and a universal caster is provided under the coal collecting box 20. Guide groove rods 183 are respectively provided on both sides of the inclined gate plate 182. The guide groove rods 183 are vertically fixed, and slide grooves are respectively provided on the inner sides thereof. The two side edges of the inclined gate plate 182 extend into the adjacent slide grooves respectively, and can be raised and lowered along the slide grooves under the drive of the upper vertical telescopic cylinder 181. The remaining structures are as shown in Implementation Method 1 and are omitted.

[0040] The method for using the energy-saving iron removal and foreign matter removal system for a belt conveyor of the present invention comprises the following steps: ①. The energy-saving iron removal and foreign matter removal system for the belt conveyor according to the second embodiment is provided on the equipped belt conveyor, and is put into use simultaneously with the equipped belt conveyor; ②. When the lower computer 5 senses an increase in the magnetic flux within the easily removable inductor 1, it determines that there is iron in the coal flow 7. The lower computer 5 turns on the power supply of the electromagnetic iron remover 1 through the normally open power switch 4 and resets after a predetermined time T. The predetermined time T is sufficient for the iron foreign matter to be removed by the electromagnetic iron remover 1; When the staff sees foreign matter in the coal flow image captured by the first camera 13 through the display screen 11, they input a closing instruction to the upper computer 10 through the instruction input device 12. The upper computer 10 transmits the closing instruction to the lower computer 5. The lower computer 5 turns on the power supply of the electromagnetic iron remover 1 through the normally open power switch 4. When the staff sees on the display screen 11 that the image captured by the second camera 14 shows that the iron foreign matter on the electromagnetic iron remover 1 is first sucked away and then removed, the staff inputs a power-off command to the upper computer 10 through the command input device 12. The upper computer 10 transmits the power-off command to the lower computer 5. The lower computer 5 cuts off the power supply to the electromagnetic iron remover 1 through the normally open power switch 4. ③. Such as Figure 3 、 4 As shown, when the staff sees the coal flow image captured by the third camera 16 through the display screen 11, it shows that there are still foreign objects in the coal flow 7. It is judged that the foreign objects are non-ferrous foreign objects, and the non-ferrous foreign object removal instruction is input to the upper computer 10 through the instruction input device 12. The upper computer 10 transmits the non-ferrous foreign object removal instruction to the lower computer 5. Under the control of the lower computer 5, the piston rod of the lower vertical telescopic cylinder 171 is extended, so that the platform 172 flattens the upper belt 6 above it, and the piston rod of the upper vertical telescopic cylinder 181 is extended, driving the inclined gate 182 to move downward, cutting off the coal flow 7. The upper belt 6 of the accompanying belt conveyor passes between the lower edge of the inclined gate 182 and the platform 172. Under the guidance of the inclined gate 182, the coal flow 7 and the foreign objects therein are separated from the upper belt 6 of the accompanying belt conveyor and fall into the coal collecting box 20.

[0041] Then, under the control of the staff or the automatic control of the lower computer 5, the pneumatic lifting platform 17 and the pneumatic lifting inclined gate 18 are reset, and the coal flow 7 returns to normal.

[0042] Implementation method three: The host computer 10 or the slave computer 5 is also equipped with a machine learning module (not shown in the figure). The machine learning module and the host computer 10 or the slave computer 5 constitute an intelligent visual detection and processing system. According to the images captured by the first, second, and third cameras 13, 14, and 16, it outputs instructions on behalf of the staff and controls the slave computer 5 or the host computer 10. The remaining structure is as described in Implementation method two and is omitted in the figure.

[0043] The method for using the energy-saving iron removal and foreign matter removal system for a belt conveyor of the present invention comprises the following steps: ①. The energy-saving iron removal and foreign matter removal system for the belt conveyor according to the third embodiment is provided on the equipped belt conveyor, and is put into use simultaneously with the equipped belt conveyor; ②. When the lower computer 5 senses an increase in the magnetic flux within the easily removable inductor 1, it determines that there is iron in the coal flow 7. The lower computer 5 turns on the power supply of the electromagnetic iron remover 1 through the normally open power switch 4 and resets after a predetermined time T. The predetermined time T is sufficient for the iron foreign matter to be removed by the electromagnetic iron remover 1; When the intelligent visual detection and processing system detects foreign matter in the coal flow image captured by the first camera 13, it inputs a closing instruction to the upper computer 10 through the instruction input device 12. The upper computer 10 transmits the closing instruction to the lower computer 5. The lower computer 5 turns on the power supply of the electromagnetic iron remover through the normally open power switch 4.

[0044] When the intelligent visual detection processing system detects that the image captured by the second camera 14 shows that the iron foreign matter on the electromagnetic iron remover is first sucked away and then removed, the power-off command is input to the upper computer 10 through the command input device 12, and the upper computer 10 transmits the power-off command to the lower computer 5. The lower computer 5 cuts off the power supply to the electromagnetic iron remover 1 through the normally open power switch 4.

[0045] ③. When the intelligent visual detection and processing system detects that there are still foreign objects in the coal flow 7 in the coal flow image captured by the third camera 16, it is determined that the foreign objects are non-ferrous foreign objects. The non-ferrous foreign object removal instruction is input to the upper computer 10 through the instruction input device 12. The upper computer 10 transmits the non-ferrous foreign object removal instruction to the lower computer 5. Under the control of the lower computer 5, the piston rod of the lower vertical telescopic cylinder 181 is extended, so that the platform 172 flattens the upper tape 6 above it. The piston rod of the upper vertical telescopic cylinder 181 is extended, driving the inclined gate 182 to move downward, cutting off the coal flow 7, and using the tape conveyor. The upper belt 6 of the machine passes between the lower edge of the inclined gate 182 and the platform 172. Under the guidance of the inclined gate 182, the coal flow 7 and the foreign matter therein are separated from the upper belt 6 of the belt conveyor and fall into the coal collecting box 21. Then, under the control of the staff or the automatic control of the lower machine 5, the pneumatic lifting platform 17 and the pneumatic lifting inclined gate 18 are reset, and the coal flow returns to normal. The technical problem to be solved by the present invention is how to overcome the above-mentioned defects of the prior art and provide an energy-saving iron removal and foreign matter removal system for a belt conveyor with a simple structure, easy installation and energy-saving operation, and a method for using the same.

Claims

1. An energy-saving iron and foreign matter removal system for a belt conveyor includes an electromagnetic iron remover, which is arranged above the belt conveyor and powered by an underground power supply, and is characterized by: It also includes an easily detachable inductor coil, a normally open power switch and a lower computer. The normally open power switch is set on the wire between the underground power supply and the electromagnetic iron remover. The upper belt of the belt conveyor, the coal flow and foreign matter that may appear on the coal flow are sufficient to pass through the easily detachable inductor coil. The easily detachable inductor coil contains M×N turns of wire. The above-mentioned wire is divided into M groups, each group contains N turns of wire, and is cut off. The wire ends on one side of the break are respectively connected to the N pins of an N-line plug one by one, and the wire ends on the other side of the break are respectively connected to the N pins of an N-line socket one by one. On the metal connector in the hole, the N-line plug and N-line socket of the same group are plugged into each other to form M N-line quick-connect connectors. The cut wires are connected detachably through the above-mentioned M N-line quick-connect connectors. The two ends of the easily detachable inductor coil are respectively connected to the input end of the lower computer signal. When the lower computer senses an increase in the magnetic flux in the easily detachable inductor coil, it is determined that there is iron foreign matter in the coal flow. The lower computer turns on the power supply of the electromagnetic iron remover through the normally open power switch and resets after a predetermined time T. The predetermined time T is sufficient for the iron foreign matter to be absorbed and removed by the electromagnetic iron remover, where M and N are positive integers.

2. The energy-saving iron and foreign matter removal system for a belt conveyor according to claim 1 is characterized in that: It also includes a host computer, which is connected to the slave computer through a signal line, radio or optical fiber to form a remote control network. The host computer is equipped with a display screen and a command input device. A first camera is provided above the matching belt conveyor upstream of the coal flow below the electromagnetic iron remover. The lens of the first camera points to the coal flow below and is connected to the signal input end of the slave computer. The coal flow image taken by the first camera is displayed in real time on the display screen. When the staff sees foreign matter in the coal flow image taken by the first camera, they input a closing command to the host computer through the command input device. The host computer transmits the closing command to the slave computer, and the slave computer turns on the power supply of the electromagnetic iron remover through the normally open power switch.

3. The energy-saving iron and foreign matter removal system for a belt conveyor according to claim 2 is characterized in that: The electromagnetic iron remover is a self-unloading electromagnetic iron remover, which also includes a second camera. The second camera is facing the bottom of the electromagnetic iron remover and is connected to the signal input end of the lower computer. The image captured by the second camera is displayed in real time on the display screen.

4. The energy-saving iron and foreign matter removal system for a belt conveyor according to claim 1 is characterized in that: It also includes an alarm, which is connected to the signal output end of the lower computer or the upper computer.

5. The energy-saving iron and foreign matter removal system for a belt conveyor according to claim 3 is characterized in that: A third camera is provided downstream of the coal flow below the electromagnetic iron remover. The lens of the third camera faces the coal flow below it and is connected to the signal input terminal of the lower computer. The image captured by the third camera is displayed in real time on the display screen.

6. The energy-saving iron and foreign matter removal system for a belt conveyor according to claim 5 is characterized in that: A non-ferrous foreign matter removal device is also provided downstream of the third camera. The non-ferrous foreign matter removal device includes a pneumatic lifting platform and a pneumatic lifting inclined gate. The pneumatic lifting platform is arranged between the upper belt and the lower belt of the equipped belt conveyor. The pneumatic lifting platform includes a lower vertical telescopic cylinder and a platform. The pneumatic lifting inclined gate is arranged above the coal flow of the upper belt of the equipped belt conveyor. The pneumatic lifting inclined gate includes an upper vertical telescopic cylinder and an inclined gate. The upper and lower vertical telescopic cylinders both include a cylinder body and a piston rod. The outer end of the piston rod of the upper vertical telescopic cylinder is downward, and the inclined gate is fixed on the outer end of its piston rod. The outer end of the piston rod of the lower vertical telescopic cylinder is upward, and the platform is fixed on the outer end of its piston rod. The platform and the inclined gate plate are opposite to each other via the upper belt. The upper and lower vertical telescopic cylinders are connected to the matching high-pressure air supply pipe through the electric control valve group respectively, and the electric control valve groups of the two are connected to the signal output end of the lower computer respectively. The side of the inclined gate plate adjacent to the center of the tunnel is downstream of the coal flow, and the side adjacent to the side of the tunnel is upstream of the coal flow.

7. The energy-saving iron and foreign matter removal system for a belt conveyor according to claim 6 is characterized in that: A coal collecting box is also provided in the tunnel on one side of the non-ferrous foreign matter removal device, and a universal caster is provided under the coal collecting box. Guide groove rods are provided on both sides of the inclined gate plate. The guide groove rods are fixed vertically, and slide grooves are provided on the inner sides thereof. The two sides of the inclined gate plate extend into the adjacent slide grooves respectively, and can be raised and lowered along the slide grooves driven by the upper vertical telescopic cylinder.

8. The energy-saving iron and foreign matter removal system for a belt conveyor according to claim 7 is characterized in that: The upper computer or the lower computer is also equipped with a machine learning module, which forms an intelligent visual detection and processing system with the upper computer or the lower computer. According to the images captured by the first, second and third cameras, the system outputs instructions on behalf of the staff and controls the lower computer or the upper computer.

9. A method for using an energy-saving iron and foreign matter removal system for a belt conveyor, comprising the following steps: ①. The energy-saving iron removal and foreign matter removal system for the belt conveyor according to claim 7 is provided on the equipped belt conveyor, and is put into use simultaneously with the equipped belt conveyor; ②. When the lower computer senses an increase in the magnetic flux in the easily removable inductor coil, it determines that there is iron in the coal flow. The lower computer turns on the power supply of the electromagnetic iron remover through the normally open power switch and resets after a predetermined time T. The predetermined time T is sufficient for the electromagnetic iron remover to remove the iron. When the staff sees foreign matter in the coal flow image captured by the first camera through the display screen, they input a closing command to the upper computer through the command input device. The upper computer transmits the closing command to the lower computer, and the lower computer turns on the power supply of the electromagnetic iron remover through the normally open power switch. When the staff sees the image captured by the second camera on the display screen showing that the iron foreign matter on the electromagnetic iron remover is first sucked away and then removed, they input a power-off command to the upper computer through the command input device. The upper computer transmits the power-off command to the lower computer, and the lower computer cuts off the power supply to the electromagnetic iron remover through the normally open power switch; ③. When the staff sees on the display screen that the coal flow image captured by the third camera shows that there are still foreign objects in the coal flow, they judge that the foreign objects are non-ferrous foreign objects and input the non-ferrous foreign object removal instruction to the upper computer through the instruction input device. The upper computer transmits the non-ferrous foreign object removal instruction to the lower computer. Under the control of the lower computer, the piston rod of the lower vertical telescopic cylinder is extended, so that the platform can flatten the upper belt above it. The piston rod of the upper vertical telescopic cylinder is extended, driving the inclined gate plate to move downward, cutting off the coal flow. The upper belt of the accompanying belt conveyor passes between the lower edge of the inclined gate plate and the platform. Under the guidance of the inclined gate plate, the coal flow and the foreign objects therein are separated from the upper belt of the accompanying belt conveyor and fall into the coal collecting box. Then, under the control of the staff or the automatic control of the lower computer, the pneumatic lifting platform and the pneumatic lifting inclined gate plate are reset, and the coal flow returns to normal.

10. A method for using an energy-saving iron and foreign matter removal system for a belt conveyor, comprising the following steps: ①. The energy-saving iron removal and foreign matter removal system for the belt conveyor according to claim 8 is provided on the equipped belt conveyor, and is put into use simultaneously with the equipped belt conveyor; ②. When the lower computer senses an increase in the magnetic flux in the easily removable inductor coil, it determines that there is iron in the coal flow. The lower computer turns on the power supply of the electromagnetic iron remover through the normally open power switch and resets after a predetermined time T. The predetermined time T is sufficient for the electromagnetic iron remover to remove the iron. When the intelligent visual detection and processing system detects foreign matter in the coal flow image captured by the first camera, it inputs a closing command to the upper computer through the command input device. The upper computer transmits the closing command to the lower computer, and the lower computer turns on the power supply of the electromagnetic iron remover through the normally open power switch. When the intelligent visual detection processing system detects that the iron foreign matter on the electromagnetic iron remover on the image display screen captured by the second camera is first sucked away and then removed, a power-off command is input to the upper computer through the command input device, and the upper computer transmits the power-off command to the lower computer, and the lower computer cuts off the power supply to the electromagnetic iron remover through the normally open power switch; ③. When the intelligent visual detection and processing system detects that the coal flow image captured by the third camera shows that there are still foreign objects in the coal flow, it is determined that the foreign objects are non-ferrous foreign objects. The non-ferrous foreign object removal instruction is input to the upper computer through the instruction input device. The upper computer transmits the non-ferrous foreign object removal instruction to the lower computer. Under the control of the lower computer, the piston rod of the lower vertical telescopic cylinder is extended, so that the platform flattens the upper belt above it. The piston rod of the upper vertical telescopic cylinder is extended, driving the inclined gate plate to move downward, cutting off the coal flow. The upper belt of the accompanying belt conveyor passes between the lower edge of the inclined gate plate and the platform. Under the guidance of the inclined gate plate, the coal flow and the foreign objects therein are separated from the upper belt of the accompanying belt conveyor and fall into the coal collection box. Then, under the control of the staff or the automatic control of the lower computer, the pneumatic lifting platform and the pneumatic lifting inclined gate plate are reset, and the coal flow returns to normal.

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